基于煤电超低排放的SCR脱硝系统多方位优化
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摘要
针对燃煤电厂NOx超低排放运行中产生的问题,提出了根据各自脱硝系统的特点,给予脱硝喷氨优化、自动控制优化以及脱硝流场优化等技术应对措施。脱硝运行应用实例表明,实施上述优化措施对长期、稳定、安全地实现NOx超低排放是有效可靠的。
According to the requirement on the ultra-low emission of NOx,the optimal techniques,including ammonia-injection-grid(AIG) optimization, automatic control optimization and flow field of SCR denitrification system optimization were introduced.These optimal techniques of SCR denitration system have expounded.The application shows that these optional techniques are effective and feasible to providing the ensuring for a better long term stable and safe operation of NOxultra-low emission.
According to the requirement on the ultra-low emission of NOx,the optimal techniques,including ammonia-injection-grid(AIG) optimization, automatic control optimization and flow field of SCR denitrification system optimization were introduced.These optimal techniques of SCR denitration system have expounded.The application shows that these optional techniques are effective and feasible to providing the ensuring for a better long term stable and safe operation of NOxultra-low emission.
引文
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[5]XU Yuanyuan,ZHANG Yan,LIU Fengna,et al..CFD analysis on the catalyst layer breakage failure of an SCR-DeNOx system for a 350 MW coal-fired power plant[J].Computers&Chemical Engineering,2014,69(3):119-127.
[6]安敬学,王磊,秦淇,等.电站锅炉脱硝系统催化剂磨损数值模拟[J].锅炉技术,2016,47(2):32-38.
[2]胡永锋,梁新磊.燃煤电厂SCR法烟气脱硝装置常见问题及原因分析[J].华电技术,2015,37(11):62-64.
[3]孙东锋,黄启东,张永军,等.首台1 000 MW机组烟气超低排放改造后脱硝系统控制策略改进及探讨[J].华东电力,2014,42(11):2457-2460.
[4]俞峰苹,李清毅,赵金龙,等.选择性催化还原烟气脱硝系统烟气流量在线测量方法[J].热力发电,2016,45(2):101-104.
[5]XU Yuanyuan,ZHANG Yan,LIU Fengna,et al..CFD analysis on the catalyst layer breakage failure of an SCR-DeNOx system for a 350 MW coal-fired power plant[J].Computers&Chemical Engineering,2014,69(3):119-127.
[6]安敬学,王磊,秦淇,等.电站锅炉脱硝系统催化剂磨损数值模拟[J].锅炉技术,2016,47(2):32-38.